Unlock costumes in Story Mode
Beat the main campaign once to unlock the ability to use costumes in story mode.

Unlock Player name colors in Raid
Blue - Get 150 different bonuses.
Green - Get 100 different bonuses.
Purple - Get ALL different bonuses.
Red - Get 200 different bonuses.
Yellow - Get 50 different bonuses.

Unlock Bonuses
Hell Difficulty - Complete the game once on normal.
Hydra Shotgun - Complete the game on Normal difficulty or higher.
Infinite Rocket Launcher - Complete the Game on Hell difficulty.
New Game+ - Complete the game once on any difficulty.